DTC P0136: 1/2 O2 Sensor Heater Circuit Malfunction: Notes

NOTE: Test applies only to 4.7L and 5.9L California emission vehicles. For circuit identification and wiring diagram, see WIRING DIAGRAMS article. After each repair procedure has been completed, reconnect all components. Perform TEST VER-5: OBD-II MONITOR VERIFICATION under VERIFICATION TESTS to ensure system is functioning properly.